80949105 has 16 divisors (see below), whose sum is σ = 143909760. Its totient is φ = 43172784.

The previous prime is 80949103. The next prime is 80949109. The reversal of 80949105 is 50194908.

It is not a de Polignac number, because 80949105 - 2¹ = 80949103 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80949105.

It is not an unprimeable number, because it can be changed into a prime (80949103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299677 + ... + 299946.

It is an arithmetic number, because the mean of its divisors is an integer number (8994360).

Almost surely, 2^80949105 is an apocalyptic number.

It is an amenable number.

80949105 is a deficient number, since it is larger than the sum of its proper divisors (62960655).

80949105 is a wasteful number, since it uses less digits than its factorization.

80949105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599637 (or 599631 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 80949105 is about 8997.1720557073. The cubic root of 80949105 is about 432.5842307575.

It can be divided in two parts, 8094 and 9105, that multiplied together give a triangular number (73695870 = T₁₂₁₄₀).

The spelling of 80949105 in words is "eighty million, nine hundred forty-nine thousand, one hundred five".